Resultados de búsqueda - Excavation.

Excavating with cows por Technical Centre for Agricultural and Rural Cooperation

“…For several years now, ILCA (International Livestock Centre for Africa) has been successfully experimenting with the use of draught animal power to excavate ponds. A pair of cows harnessed to an easily made implement can move 13 cubic metres of...…”
Enlace del recurso

Quantifying source and dynamics of acidic pollution in a coastal acid sulphate soil area por Phong, N.D., To Phuc Tuong, Phu, N.D., Nang, N.D., Hoanh, Chu Thai

“…The study identified canal embankment deposits, made of ASS spoils from canal dredging/excavation, as the main source of acidic pollution in the surrounding canal network. …”
Enlace del recurso

Draft animal power for Vertisol management por Astatke, A., Mohamed-Saleem, M.A.

“…Among the topics of discussion are land shaping equipment; the ridge and furrow system; minimum tillage with BBM attachments; animal drawn scoops; pond excavation using animal power; other land formation equipment, and water lifting equipment.…”
Enlace del recurso

On-farm research to improve smallholder livestock productivity in the Ethiopian highlands por Gryseels, Guido, Anderson, F.M., Asamenew, G., Mesgina, A., Astatke, A., Wolde-Mariam, W.A.

“…Discusses on farm trials and research activities on the integration of crossbred cows and forages in the farming system, use of single oxen for crop cultivation, use of oxen for pond excavation and improved cultivation techniques for vertisol development.…”
Enlace del recurso

Utforsling och tillvaratagande av sten från ett hygge, är det lönsamt? por Andersson, Johan

Enlace del recurso

Colonization of two tropical forage grasses by Acromyrmex landolti (Hymenoptera: Formicidae) in Eastern Colombia por Lapointe, Stephen L., Serrano, M.S., Villegas, A

“…Comparison of maps demonstrated that colonies did not persist more than a single year at a given site implying colony migration. Excavation of over 100 colonies of Ac. landolti revealed a single entrance per colony in all cases.…”
Enlace del recurso

Impacts of lining, maintenance and operations on water delivery performance in Pakistan por Murray-Rust, Hammond, Vander Velde, E.J., Merrey, Douglas J.

“…A comparative study of hydraulic performance of three secondary canals in Pakistan's Punjab was undertaken to determine the relative benefits of three physical interventions: (1) focusing standard maintenance inputs using a computer-based model to analyze the effects of work in specific locations in a small distributary, (2) major desilting involving mechanical excavation of sediment in a medium sized canal, and (3) lining of the lower two-thirds of a major distributary. …”
Enlace del recurso

Comparison of tree cavity abundance and characteristics in managed and unmanaged Swedish boreal forest por Michon, Sophie

“…Natural-decay cavities stood for only 5.5% of the cavities, while the remaining 94.5% were excavated. This result emphasizes the importance of primary cavity excavators, mainly woodpeckers (Picidae), for cavity supply in the Swedish boreal forest. …”
Enlace del recurso

Fytoremediering : växter som metod för att sanera schaktmassor från föroreningar vid järnväg i Sverige por Holmberg, Carl Jonas

Assessment of herbaceous vegetation species composition growing around Kleinkopje opencast coal mine, Mpumalanga Province, South Africa por Mangwane, M., Madakadze, I.C., Nherera-Chokuda, F.V., Dube, Sikhalazo, Mndela, M., Tjelele, J., Pule, H.T.

“…Coal mining involves the removal of natural vegetation, heavy excavation; combustion and ignition accompanied by a release of coal dust to the atmosphere that drastically reduce the ecosystem services. …”
Enlace del recurso

Assessment of herbaceous vegetation species composition growing around Kleinkopje opencast coal mine, Mpumalanga Province, South Africa por Mangwane, M., Madakadze, I.C., Nherera-Chokuda, F.V., Dube, Sikhalazo, Mndela, M., Tjelele, T.J., Pule, H.T.

“…Coal mining involves the removal of natural vegetation, heavy excavation; combustion and ignition accompanied by a release of coal dust to the atmosphere that drastically reduce the ecosystem services. …”
Enlace del recurso

Geokemisk undersökning vid Rävlidmyrgruvan, Västerbottens län : provtagning, analys och förslag till åtgärder por Frandsen, Sara

“…The mining industry, in terms of ore excavation and metal production, is and has been important to the Swedish economy. …”

Produktionseffekter och behov av dikesrensning i Sveaskogs skogar por Hägglund, Daniel

“…In addition, frost, poorly planned drainage systems, bad excavation and damage caused by harvesting operations can decrease the condition of the ditch. …”
Enlace del recurso

Rosenlunds återfunna formträdgård : bilden av en dold anläggning från 1700-talet por Edström, Malin, Nystedt, Anna

Påverkan av torvbrytning på fem vattendrag i Gävleborgs län por Karlsson, Markus

“…Total organic carbon (TOC), conductivity and suspended material varied between mines whereby no conclusions can be drawn on the effects of peat excavation. Analyses made with the Swedish Environmental Protection Agency classifications system also indicated higher nitrogen classes downstream of the peat mines. …”
Enlace del recurso

Fytoremediering - ett hållbart sätt att tillgängliggöra förorenad mark? por Kind, Jennie

Mjölkproduktion por Eklund, Anders

“…The cost does not include excavation around the building, electrical installations and own work contribution. …”
Enlace del recurso

Tillgänglighetsanpassad naturlek med historisk inspiration : en gestaltning av Uppåkra arkeologiska centers utemiljö por Bergqvist, Ellen, Hjern, Lisa

Alnarps rehabiliteringsskog : ett gestalningsförslag por Sydow, Nils von

“…The material from the lake excavation will be used to construct a small hill in the middle of the area which will make a fine resting place with easy access to the tree zones of the forest. …”

Läkande landskap : att rena mark och vatten med fytoremediering i en urban kontext por Lundén, Fanny